In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea examines liquids of different densities.

This science fair project teaches students the differences between fruits and vegetables.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

This science fair project idea researches the effects of acid rain on plant growth.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea produces varying pitches of sound.

This science fair project idea explores the different properties of matter.

This science fair project idea identifies trees using a dichotomous key.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This science fair project idea compares biodiversity between drops of water.

This science fair project will help students learn about non-vascular plants, such as mosses.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

This science fair project idea determines the most effective method of preserving food.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.